Install Loki on Ubuntu 22.04 LTS
Install Loki
Get the latest version tag of Loki from GitHub.
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LOKI_VERSION=$(curl -s "https://api.github.com/repos/grafana/loki/releases/latest" | grep -Po '"tag_name": "v\K[0-9.]+')
Create a new directory to store Loki binary and configuration file.
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sudo mkdir /opt/loki
Download archive from releases page of the Loki repository.
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sudo wget -qO /opt/loki/loki.gz "https://github.com/grafana/loki/releases/download/v${LOKI_VERSION}/loki-linux-amd64.zip"
Extract binary file from archive:
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sudo gunzip /opt/loki/loki.gz
Set execute permission for file:
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sudo chmod a+x /opt/loki/loki
In /usr/local/bin directory we can create a symbolic link to the loki command:
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sudo ln -s /opt/loki/loki /usr/local/bin/loki
Now loki command is available for all users as a system-wide command.
Download configuration file for Loki:
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sudo wget -qO /opt/loki/loki-local-config.yaml "https://raw.githubusercontent.com/grafana/loki/v${LOKI_VERSION}/cmd/loki/loki-local-config.yaml"
To verify installation, we can check Loki version:
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loki -version
Run Loki as a service
We can configure systemd for running Loki as a service. Create a systemd unit file:
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sudo nano /etc/systemd/system/loki.service
Add the following content to the file:
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[Unit]
Description=Loki log aggregation system
After=network.target
[Service]
ExecStart=/opt/loki/loki -config.file=/opt/loki/loki-local-config.yaml
Restart=always
[Install]
WantedBy=multi-user.target
Start Loki service:
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sudo service loki start
To make sure that Loki service is running, you can use the following command:
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sudo service loki status
Also you can stop or restart the service:
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sudo service loki stop
sudo service loki restart
To enable Loki to start on boot, run the following command:
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sudo systemctl enable loki
Uninstall Loki
To completely remove the Loki, stop the service and remove a systemd unit file.
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sudo service loki stop
sudo systemctl disable loki
sudo rm -rf /etc/systemd/system/loki.service
sudo systemctl daemon-reload
sudo systemctl reset-failed
Delete the installation directory:
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sudo rm -rf /opt/loki
Remove symbolic link:
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sudo rm -rf /usr/local/bin/loki